The addition of changed the game for the 5D series. By splitting every pixel on the 30.4MP sensor into two photodiodes, the camera can calculate distance and focus instantly without the "hunting" common in older contrast-detection systems. Canon Autofocus Series: Dual Pixel CMOS AF
This system takes over when you switch to Live View or Video mode. It uses the camera's image sensor to perform phase-detection autofocus across approximately 80% of the frame, allowing for smooth, continuous tracking that was previously impossible on full-frame DSLRs. Viewfinder Focus: The 61-Point Powerhouse The viewfinder system in the 5D Mark IV focus canon 5d mark iv
This is the primary system used when looking through the viewfinder. It features 61 AF points, with 41 of them being highly sensitive "cross-type" points that can detect both horizontal and vertical lines. The addition of changed the game for the 5D series
effectively uses two distinct autofocus (AF) systems, each optimized for different shooting styles: It uses the camera's image sensor to perform